/* cairo - a vector graphics library with display and print output
*
* Copyright © 2005 Red Hat , Inc
* Copyright © 2007 Adrian Johnson
* Copyright © 2009 Chris Wilson
*
* This library is free software ; you can redistribute it and / or
* modify it either under the terms of the GNU Lesser General Public
* License version 2 . 1 as published by the Free Software Foundation
* ( the " LGPL " ) or , at your option , under the terms of the Mozilla
* Public License Version 1 . 1 ( the " MPL " ) . If you do not alter this
* notice , a recipient may use your version of this file under either
* the MPL or the LGPL .
*
* You should have received a copy of the LGPL along with this library
* in the file COPYING - LGPL - 2 . 1 ; if not , write to the Free Software
* Foundation , Inc . , 51 Franklin Street , Suite 500 , Boston , MA 02110 - 1335 , USA
* You should have received a copy of the MPL along with this library
* in the file COPYING - MPL - 1 . 1
*
* The contents of this file are subject to the Mozilla Public License
* Version 1 . 1 ( the " License " ) ; you may not use this file except in
* compliance with the License . You may obtain a copy of the License at
* http : //www.mozilla.org/MPL/
*
* This software is distributed on an " AS IS " basis , WITHOUT WARRANTY
* OF ANY KIND , either express or implied . See the LGPL or the MPL for
* the specific language governing rights and limitations .
*
* The Original Code is the cairo graphics library .
*
* The Initial Developer of the Original Code is Red Hat , Inc .
*
* Contributor ( s ) :
* Chris Wilson < chris @ chris - wilson . co . uk >
*/
#include "cairoint.h"
#include "cairo-clip-inline.h"
#include "cairo-error-private.h"
#include "cairo-pattern-private.h"
#include "cairo-surface-offset-private.h"
/* A collection of routines to facilitate drawing to an alternate surface. */
static void
_copy_transformed_pattern (cairo_pattern_t *pattern,
const cairo_pattern_t *original,
const cairo_matrix_t *ctm_inverse)
{
_cairo_pattern_init_static_copy (pattern, original);
if (! _cairo_matrix_is_identity (ctm_inverse))
_cairo_pattern_transform (pattern, ctm_inverse);
}
cairo_status_t
_cairo_surface_offset_paint (cairo_surface_t *target,
int x, int y,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_clip_t *clip)
{
cairo_status_t status;
cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
cairo_pattern_union_t source_copy;
if (unlikely (target->status))
return target->status;
if (_cairo_clip_is_all_clipped (clip))
return CAIRO_STATUS_SUCCESS;
if (x | y) {
cairo_matrix_t m;
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
cairo_matrix_init_translate (&m, x, y);
_copy_transformed_pattern (&source_copy.base, source, &m);
source = &source_copy.base;
}
status = _cairo_surface_paint (target, op, source, dev_clip);
if (dev_clip != clip)
_cairo_clip_destroy (dev_clip);
return status;
}
cairo_status_t
_cairo_surface_offset_mask (cairo_surface_t *target,
int x, int y,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_pattern_t *mask,
const cairo_clip_t *clip)
{
cairo_status_t status;
cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
cairo_pattern_union_t source_copy;
cairo_pattern_union_t mask_copy;
if (unlikely (target->status))
return target->status;
if (_cairo_clip_is_all_clipped (clip))
return CAIRO_STATUS_SUCCESS;
if (x | y) {
cairo_matrix_t m;
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
cairo_matrix_init_translate (&m, x, y);
_copy_transformed_pattern (&source_copy.base, source, &m);
_copy_transformed_pattern (&mask_copy.base, mask, &m);
source = &source_copy.base;
mask = &mask_copy.base;
}
status = _cairo_surface_mask (target, op,
source, mask,
dev_clip);
if (dev_clip != clip)
_cairo_clip_destroy (dev_clip);
return status;
}
cairo_status_t
_cairo_surface_offset_stroke (cairo_surface_t *surface,
int x, int y,
cairo_operator_t op,
const cairo_pattern_t *source,
const cairo_path_fixed_t *path,
const cairo_stroke_style_t*stroke_style,
const cairo_matrix_t *ctm,
const cairo_matrix_t *ctm_inverse,
double tolerance,
cairo_antialias_t antialias,
const cairo_clip_t *clip)
{
cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
cairo_matrix_t dev_ctm = *ctm;
cairo_matrix_t dev_ctm_inverse = *ctm_inverse;
cairo_pattern_union_t source_copy;
cairo_status_t status;
if (unlikely (surface->status))
return surface->status;
if (_cairo_clip_is_all_clipped (clip))
return CAIRO_STATUS_SUCCESS;
if (x | y) {
cairo_matrix_t m;
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
if (unlikely (status))
goto FINISH;
_cairo_path_fixed_translate (&path_copy,
_cairo_fixed_from_int (-x),
_cairo_fixed_from_int (-y));
dev_path = &path_copy;
cairo_matrix_init_translate (&m, -x, -y);
cairo_matrix_multiply (&dev_ctm, &dev_ctm, &m);
cairo_matrix_init_translate (&m, x, y);
_copy_transformed_pattern (&source_copy.base, source, &m);
source = &source_copy.base;
cairo_matrix_multiply (&dev_ctm_inverse, &m, &dev_ctm_inverse);
}
status = _cairo_surface_stroke (surface, op, source,
dev_path, stroke_style,
&dev_ctm, &dev_ctm_inverse,
tolerance, antialias,
dev_clip);
FINISH:
if (dev_path != path)
_cairo_path_fixed_fini (dev_path);
if (dev_clip != clip)
_cairo_clip_destroy (dev_clip);
return status;
}
cairo_status_t
_cairo_surface_offset_fill (cairo_surface_t *surface,
int x, int y,
cairo_operator_t op,
const cairo_pattern_t*source,
const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
const cairo_clip_t *clip)
{
cairo_status_t status;
cairo_path_fixed_t path_copy, *dev_path = (cairo_path_fixed_t *) path;
cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
cairo_pattern_union_t source_copy;
if (unlikely (surface->status))
return surface->status;
if (_cairo_clip_is_all_clipped (clip))
return CAIRO_STATUS_SUCCESS;
if (x | y) {
cairo_matrix_t m;
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
status = _cairo_path_fixed_init_copy (&path_copy, dev_path);
if (unlikely (status))
goto FINISH;
_cairo_path_fixed_translate (&path_copy,
_cairo_fixed_from_int (-x),
_cairo_fixed_from_int (-y));
dev_path = &path_copy;
cairo_matrix_init_translate (&m, x, y);
_copy_transformed_pattern (&source_copy.base, source, &m);
source = &source_copy.base;
}
status = _cairo_surface_fill (surface, op, source,
dev_path, fill_rule,
tolerance, antialias,
dev_clip);
FINISH:
if (dev_path != path)
_cairo_path_fixed_fini (dev_path);
if (dev_clip != clip)
_cairo_clip_destroy (dev_clip);
return status;
}
cairo_status_t
_cairo_surface_offset_glyphs (cairo_surface_t *surface,
int x, int y,
cairo_operator_t op,
const cairo_pattern_t *source,
cairo_scaled_font_t *scaled_font,
cairo_glyph_t *glyphs,
int num_glyphs,
const cairo_clip_t *clip)
{
cairo_status_t status;
cairo_clip_t *dev_clip = (cairo_clip_t *) clip;
cairo_pattern_union_t source_copy;
cairo_glyph_t *dev_glyphs;
int i;
if (unlikely (surface->status))
return surface->status;
if (_cairo_clip_is_all_clipped (clip))
return CAIRO_STATUS_SUCCESS;
dev_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
if (dev_glyphs == NULL)
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
memcpy (dev_glyphs, glyphs, sizeof (cairo_glyph_t) * num_glyphs);
if (x | y) {
cairo_matrix_t m;
dev_clip = _cairo_clip_copy_with_translation (clip, -x, -y);
cairo_matrix_init_translate (&m, x, y);
_copy_transformed_pattern (&source_copy.base, source, &m);
source = &source_copy.base;
for (i = 0 ; i < num_glyphs; i++) {
dev_glyphs[i].x -= x;
dev_glyphs[i].y -= y;
}
}
status = _cairo_surface_show_text_glyphs (surface, op, source,
NULL, 0 ,
dev_glyphs, num_glyphs,
NULL, 0 , 0 ,
scaled_font,
dev_clip);
if (dev_clip != clip)
_cairo_clip_destroy (dev_clip);
free (dev_glyphs);
return status;
}
Messung V0.5 in Prozent C=100 H=93 G=96
¤ Dauer der Verarbeitung: 0.19 Sekunden
(vorverarbeitet am 2026-08-23)
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